Enables L-xylulose reductase (NADP+) activity. Involved in glucose metabolic process and xylulose metabolic process. Predicted to be located in brush border; cytoplasmic microtubule; and microvillus. Human ortholog(s) of this gene implicated in pentosuria. Orthologous to human DCXR (dicarbonyl and L-xylulose reductase). [provided by Alliance of Genome Resources, Apr 2022]